Bowling Average & Handicap Calculator
Inputs
| Total Pins | 1,700 |
|---|---|
| Games Bowled | 10 |
| Handicap Basis | 220 |
| Handicap Percentage | 90 % |
Bowling Average & Handicap Calculator
Work out your bowling average from total pins and games bowled, and find your league handicap from a basis score and percentage.
Inputs
Your Scores
Results
Enter a value to see results.
Handicap
Your average is ..., which gives a handicap of ... per game.
Average and Handicap, in One Place
Two numbers run every bowling league: your average and your handicap. The average is a plain measure of how well you bowl; the handicap is what lets a newcomer and a seasoned bowler share a lane and a scoresheet on fair terms. This calculator works out both from the scores you already keep.
Your Average
The average is the simplest statistic in the sport — total pins divided by games:
A=gTIf you have bowled ten games for a total of 1,700 pins, your average is 170. Leagues track this across the season and usually record it as a whole number, dropping the fractional part rather than rounding it.
Your Handicap
A handicap adds pins to each game so that bowlers of different strengths can compete. It is based on how far your average falls below a basis score that the league chooses — often 200, 220, or a perfect 300 — multiplied by a handicap percentage:
H=(B−A)×pThe result is clamped at zero: if your average is already at or above the basis, you simply get no handicap. Most leagues use a percentage of 90%, so you receive nine pins for every ten you sit below the basis.
Worked Example
A bowler with a 170 average in a league using a 220 basis at 90%:
The gap to the basis is . At 90% that becomes a handicap of per game. So a raw game of 180 counts as 225 once the handicap is added. If the same bowler's average climbed above 220, the formula would return a negative number, which is clamped to a handicap of 0. Bowling scores are unitless pin counts, so the figures are identical everywhere: a 170 average against a 220 basis leaves a 50-pin gap, and 90% of that is a 45-pin handicap per game. A raw game of 180 becomes 225 with the handicap applied.
Reading the Numbers
- Track your average over time. A rising season average is the clearest sign your game is improving.
- Know your league's basis and percentage. They decide how much your handicap shrinks as you get better — and they vary, so check your rules.
- Watch the zero floor. Once your average reaches the basis, your handicap disappears and you are effectively bowling scratch.
Frequently Asked Questions (FAQ)
How is a bowling average calculated?
Add up every game you have bowled to get total pins, then divide by the number of games. Five games totalling 850 pins gives an average of 170. Leagues usually keep a running total across the season, so your average updates after every night of bowling. The figure is normally truncated to a whole number for league records, though this calculator shows one decimal so you can see exactly where you stand.
What is a bowling handicap?
A handicap is a fixed number of pins added to each game so that bowlers of different skill levels can compete fairly. It is based on how far your average sits below a chosen basis score. A lower average produces a larger handicap, which is why a beginner and a veteran can play a meaningful match against each other.
Why do most leagues use 90%?
A handicap percentage below 100% means stronger bowlers keep a small edge, since only part of the gap to the basis is given back. Ninety percent is the common compromise: it brings scores close enough for an exciting match while still rewarding the bowler with the higher raw average. Some leagues use 80% or 100% depending on how much they want skill to matter.
What is the difference between scratch and handicap play?
Scratch play uses your raw scores with no adjustment — the highest pinfall wins. Handicap play adds your handicap to each game so that bowlers across a range of averages compete on roughly even terms. Most recreational leagues use handicap formats; tournaments and higher divisions are often scratch.
Disclaimer
Handicap rules vary by league and association. The basis score, percentage, and rounding used here are common conventions but may differ from your own league. Check your league rules for the exact formula that governs your standings.